Livestock water trough heater



FIG. 1 is a perspective view showing my new design for a livestock watertrough heater;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a left side elevational view thereof;

FIG. 5 is a right side elevational view thereof;

FIG. 6 is a front elevational view thereof;

FIG. 7 is a rear elevational view thereof; and,

FIG. 8 is an environmental perspective view of the livestock watertrough heater, shown in use.

The broken lines in the drawings depict exemplary environment andcomponent elements that might be used in conjunction with the livestockwater trough heater that are shown for purposes of illustration, andform no part of the design claim.

CLAIM The ornamental design for a livestock water trough heater, asshown and described.